diff --git a/characters/base/character.gd b/characters/base/character.gd
index 96a5a0b..0f61a5f 100644
--- a/characters/base/character.gd
+++ b/characters/base/character.gd
@@ -410,9 +410,18 @@ func _check_contacts() -> void:
 		var other := _body_state.get_contact_collider_object(i)
 		if other is StaticBody3D:
 			var contact_normal := _body_state.get_contact_local_normal(i)
-			if acos(contact_normal.dot(ground_normal)) <= _max_slope_angle:
+			var diff_current_ground := acos(contact_normal.dot(
+				ground_normal
+			))
+			var diff_true_ground := acos(contact_normal.dot(
+				Vector3.UP if gravity_scale >= 0.0 else Vector3.DOWN
+			))
+			if (
+				diff_current_ground <= _max_slope_angle ||
+				diff_true_ground <= _max_slope_angle/2.0
+			):
 				new_ground += contact_normal
-			else:
+			elif diff_current_ground < PI - _max_slope_angle/2.0:
 				new_wall += contact_normal
 		# Along the way, handle collisions with other kinds of objects.
 		elif other is Character: